Go to the local drug store and get some 80 SPF spray-on sunscreen. Also sun-protecting chapstick (the highest SPF I could find for chapstick was 30).
Don't forget to do your ears, the backs of your hands, and the back of your neck.
Don't forget to do your ears, the backs of your hands, and the back of your neck.
[edit: i do tan, just very very slowly :p, though that may be a consequence of summers spent doing cs / math research rather than healthy stuff :)]